FR2495416B1 - - Google Patents
Info
- Publication number
- FR2495416B1 FR2495416B1 FR8122045A FR8122045A FR2495416B1 FR 2495416 B1 FR2495416 B1 FR 2495416B1 FR 8122045 A FR8122045 A FR 8122045A FR 8122045 A FR8122045 A FR 8122045A FR 2495416 B1 FR2495416 B1 FR 2495416B1
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M3/00—Automatic or semi-automatic exchanges
- H04M3/42—Systems providing special services or facilities to subscribers
- H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
- H04M3/568—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants
- H04M3/569—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants using the instant speaker's algorithm
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Interconnected Communication Systems, Intercoms, And Interphones (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Telephonic Communication Services (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8006519A NL8006519A (nl) | 1980-12-01 | 1980-12-01 | Conferentiestelsel voor telefonie. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2495416A1 FR2495416A1 (fr) | 1982-06-04 |
| FR2495416B1 true FR2495416B1 (nl) | 1984-12-14 |
Family
ID=19836264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8122045A Granted FR2495416A1 (fr) | 1980-12-01 | 1981-11-25 | Systeme de conference pour telephonie |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US4425478A (nl) |
| JP (1) | JPS57119549A (nl) |
| DE (1) | DE3146865A1 (nl) |
| FR (1) | FR2495416A1 (nl) |
| GB (1) | GB2088673B (nl) |
| NL (1) | NL8006519A (nl) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8006518A (nl) * | 1980-12-01 | 1982-07-01 | Philips Nv | Conferentiestelsel voor telefonie. |
| NL8201058A (nl) * | 1982-03-15 | 1983-10-03 | Philips Nv | Werkwijze en inrichting voor het tot stand brengen van een conferentieverbinding in een tdm communicatiestelsel. |
| NL8202667A (nl) * | 1982-07-02 | 1984-02-01 | Philips Nv | Vierdraadsversterkte lijn en conferentieschakeling bevattende dergelijke vierdraadsversterkte lijnen. |
| US4547878A (en) * | 1983-06-28 | 1985-10-15 | Rockwell International Corporation | Non-linear adder |
| FR2592541B1 (fr) * | 1985-12-31 | 1991-10-11 | Leroy Alain | Terminal telephonique de teleconference. |
| JPH0783409B2 (ja) * | 1986-01-22 | 1995-09-06 | 岩崎通信機株式会社 | 割込通話方式 |
| JP2538400Y2 (ja) * | 1991-09-18 | 1997-06-11 | 株式会社ニート | 製品の収容容器 |
| US7173914B2 (en) * | 2001-08-30 | 2007-02-06 | Northrop Grumman Corporation | Communication node receipt of node-output information from processorless central equipment |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH408129A (de) * | 1963-11-17 | 1966-02-28 | Standard Telephon & Radio Ag | Konferenzschaltung für Telephon- Teilnehmer |
| CH489161A (de) * | 1963-11-17 | 1970-04-15 | Standard Telephon & Radio Ag | Konferenzschaltung für Telephon-Teilnehmer |
| US3882276A (en) * | 1974-03-22 | 1975-05-06 | Bell Telephone Labor Inc | Conferencing system utilizing oppositely phased hybrids |
| JPS5331910A (en) * | 1976-09-06 | 1978-03-25 | Mitsubishi Electric Corp | Conference telephone unit |
| US4119807A (en) * | 1977-06-13 | 1978-10-10 | Rca Corporation | Digital time division multiplex switching system |
| US4139731A (en) | 1977-09-12 | 1979-02-13 | Wescom, Inc. | Telephone conference system with active analog conference |
| DE2861171D1 (en) | 1977-12-05 | 1981-12-24 | Post Office | A control unit for establishing a four-wire link via a pair of telephone lines |
| US4289932A (en) | 1979-10-15 | 1981-09-15 | Reed Roger R | Conferencing communications system |
| US4360910A (en) | 1980-07-23 | 1982-11-23 | The United States Of America As Represented By The Secretary Of The Air Force | Digital voice conferencing apparatus in time division multiplex systems |
-
1980
- 1980-12-01 NL NL8006519A patent/NL8006519A/nl not_active Application Discontinuation
-
1981
- 1981-11-20 US US06/323,622 patent/US4425478A/en not_active Expired - Fee Related
- 1981-11-25 FR FR8122045A patent/FR2495416A1/fr active Granted
- 1981-11-26 DE DE19813146865 patent/DE3146865A1/de not_active Ceased
- 1981-11-27 GB GB8135935A patent/GB2088673B/en not_active Expired
- 1981-11-30 JP JP56192676A patent/JPS57119549A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| US4425478A (en) | 1984-01-10 |
| DE3146865A1 (de) | 1982-07-01 |
| GB2088673B (en) | 1985-05-15 |
| NL8006519A (nl) | 1982-07-01 |
| FR2495416A1 (fr) | 1982-06-04 |
| GB2088673A (en) | 1982-06-09 |
| JPH0351149B2 (nl) | 1991-08-05 |
| JPS57119549A (en) | 1982-07-26 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |